scoutos / prex-0.9.0 / sys / include / irq.h @ 03e9c04a
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/*-
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* Copyright (c) 2005, Kohsuke Ohtani
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _IRQ_H
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#define _IRQ_H
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#include <types.h> |
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#include <sys/cdefs.h> |
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#include <sys/sysinfo.h> |
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#include <sys/ipl.h> |
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#include <event.h> |
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struct irq {
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int vector; /* vector number */ |
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int (*isr)(void *); /* pointer to isr */ |
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void (*ist)(void *); /* pointer to ist */ |
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void *data; /* data to be passed for isr/ist */ |
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int priority; /* interrupt priority */ |
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u_int count; /* interrupt count */
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int istreq; /* number of ist request */ |
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thread_t thread; /* thread id of ist */
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struct event istevt; /* event for ist */ |
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}; |
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/*
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* Return values from ISR.
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*/
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#define INT_DONE 0 /* success */ |
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#define INT_ERROR 1 /* interrupt not handled */ |
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#define INT_CONTINUE 2 /* continue processing (Request IST) */ |
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/*
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* Macro to map an interrupt priority level to IST priority.
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*/
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#define ISTPRI(pri) (PRI_IST + (IPL_HIGH - pri))
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/* No IST for irq_attach() */
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#define IST_NONE ((void (*)(void *)) -1) |
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__BEGIN_DECLS |
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irq_t irq_attach(int, int, int, int (*)(void *), void (*)(void *), void *); |
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void irq_detach(irq_t);
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void irq_handler(int); |
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int irq_info(struct irqinfo *); |
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void irq_init(void); |
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__BEGIN_DECLS |
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#endif /* !_IRQ_H */ |